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Hi Mike,

you can do that by iteratively calling spm_functions, as in this example:


% ==== snippet start ====
   clc;
   mydir = spm_select([1 Inf],'dir','Please select directories with 
images to process',[],pwd);
   expr = spm_input('Expression to evaluate','!+1','s','i1+100');
   mod = spm_input('Filename modifier','!+1','s','_p100');
   for i = 1:size(mydir,1)

	currdir = deblank(mydir(i,:));
	imgs = spm_select('list', currdir, ['.*.img|nii']);

	for ii = 1:size(imgs,1)

		currimg = imgs(ii,:);
		[p nm e v] = spm_fileparts(currimg);
		evalc(['spm_imcalc_ui([currdir currimg],[currdir nm mod 
e],expr,{[],[],[],7});']);
	end;

	disp(['... done processing ' num2str(size(imgs,1)) ' images from 
directory ' num2str(i) '/' num2str(size(mydir,1)) ', proceeding...']);
   end;
   disp(['... done processing all images from ' num2str(size(mydir,1)) ' 
directories!']);

% ====  snippet end ===

Watch out for linebreaks when copying to the Matlab window. Note that 
calling spm_imcalc_ui allows for multiple further options (e.g., note I 
chose '7' as the interpolation type, which may not be what you want). In 
general, though, this may do the job.

Cheers,
Marko


Michael Schlund wrote:
> Hi folks,
> Is there a way to use Imcalc to perform the same calculation on a large
> number of images that are in the same directory?
>
> We'd like to make a simple conversion to each and every file and get a
> corresponding output image that is named something like
> OUT_nameofinputimage.
> EG: So, we select all our inout files A, B, C..... (do
> calculation, eg. f=i1+100) and then get output files: OUT_A, OUT_B,
> OUT_C......
>
> Thanks for any help!!
> Mike Schlund
>

-- 
____________________________________________________
PD Dr. med. Marko Wilke
  Facharzt für Kinder- und Jugendmedizin
  Leiter, Experimentelle Pädiatrische Neurobildgebung
  Universitäts-Kinderklinik
  Abt. III (Neuropädiatrie)


Marko Wilke, MD, PhD
  Pediatrician
  Head, Experimental Pediatric Neuroimaging
  University Children's Hospital
  Dept. III (Pediatric Neurology)


Hoppe-Seyler-Str. 1
  D - 72076 Tübingen, Germany
  Tel. +49 7071 29-83416
  Fax  +49 7071 29-5473
  [log in to unmask]

  http://www.medizin.uni-tuebingen.de/kinder/epn
____________________________________________________